How would I go about creating a HTTP request with POST data in classic asp (not .net) ?
You can try something like this:
Set ServerXmlHttp = Server.CreateObject("MSXML2.ServerXMLHTTP.6.0")
ServerXmlHttp.open "POST", "http://www.example.com/page.asp"
ServerXmlHttp.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
ServerXmlHttp.setRequestHeader "Content-Length", Len(PostData)
ServerXmlHttp.send PostData
If ServerXmlHttp.status = 200 Then
TextResponse = ServerXmlHttp.responseText
XMLResponse = ServerXmlHttp.responseXML
StreamResponse = ServerXmlHttp.responseStream
Else
' Handle missing response or other errors here
End If
Set ServerXmlHttp = Nothing
where PostData is the data you want to post (eg name-value pairs, XML document or whatever).
You'll need to set the correct version of MSXML2.ServerXMLHTTP to match what you have installed.
The open method takes five arguments, of which only the first two are required:
ServerXmlHttp.open Method, URL, Async, User, Password
Method: "GET" or "POST"
URL: the URL you want to post to
Async: the default is False (the call doesn't return immediately) - set to True for an asynchronous call
User: the user name required for authentication
Password: the password required for authentication
When the call returns, the status property holds the HTTP status. A value of 200 means OK - 404 means not found, 500 means server error etc. (See http://en.wikipedia.org/wiki/List_of_HTTP_status_codes for other values.)
You can get the response as text (responseText property), XML (responseXML property) or a stream (responseStream property).
You must use one of the existing xmlhttp server objects directly or you could use a library which makes life a bit easier by abstracting the low level stuff away.
Check ajaxed implementation of fetching an URL
Disadvantage: You need to configure the library in order to make it work. Not sure if this is necessary for your project.
Related
Lets say I have developed a VBScript function (which I haven't), which does an HTTP POST to a specific URL and awaits back the response. Now that response I need to resubmit it back to another (different) URL but with the same session ID. Is there a way to do this?
Just to post a way I thought this might work.
Function HTTPPOST(URL1,URL2,Message)
Set ohttp = createobject("msxml3.serverxmlhttp")
ohttp.Open "POST", URL1,False
ohttp.send message
response= ohttp.responseText
''Now I want to resend the response back to a different URL2
End Function
I am sending an url parameter to servlet using the following jQuery piece:
$.getJSON("http://localhost:8080/JsoupPrj/JasonGen?url=" + url, function(data) {
$("#content").html(data);
});
On the server side, the servlet gets the parameter, for that I coded as below:
String url = (String) request.getAttribute("url");
But it is not working, can you tell me where I am doing wrong? I believe I am not passing the parameter properly to the servlet. The servlet triggers each time through the JavaScript, but it is not seeing the parameters passed from the browser.
Here,
String url = (String) request.getAttribute("url");
you're trying to get a request parameter as a request attribute instead of as a request parameter. This will obviously not do what you want.
You need to get a request parameter as a request parameter, not as a request attribute.
String url = request.getParameter("url");
Unrelated to the concrete problem: you don't seem to be URL-encoding the parameter at all before sending. This will possibly cause other problems, unrelated to this one, when the url contains special characters. Look at the JS encodeURIComponent() function, or the data argument of the $.getJSON() function. See for more hints also How to use Servlets and Ajax?
I am working on an app where we have to pass specific web api parameters to a web app using HTTP POST.
eg:
apimethod name
parameter1 value
parameter2 value
So do I use a string or URLEncodedPostData to send that data?
It would be good if u help me with a code eg.
I am using something like this but it doesnt post the data to the server.
Though the response code is ok/200 and I also get get a parsed html response when i read the httpresponse input stream. But the code doesnt post anything. So unable to get the expected response.
_postData.append("method", "session.getToken");
_postData.append( "developerKey", "value");
_postData.append( "clientID", "value");
_httpConnection = (HttpConnection) Connector.open(URL, Connector.READ_WRITE);
String encodedData = _postData.toString();
_httpConnection.setRequestMethod(HttpConnection.POST);
_httpConnection.setRequestProperty("User-Agent", "BlackBerry/3.2.1");
_httpConnection.setRequestProperty("Content-Language", "en-US");
_httpConnection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
_httpConnection.setRequestProperty("Content-Length",(new Integer(encodedData.length())).toString());
os = _httpConnection.openOutputStream();
os.write(requeststring.getBytes());`
The code you posted above looks correct - although you'll want to do a few more things (maybe you did this already but didn't include it in your code):
Close the outputstream once you've written all the bytes to it
Call getResponseCode() on the connection so that it actually sends the request
POSTed parameters are usually sent in the response BODY, which means URL-encoding them is inappropriate. Quote from the HTTP/1.1 protocol:
Note: The "multipart/form-data" type has been specifically defined
for carrying form data suitable for processing via the POST
request method, as described in RFC 1867 [15].
The post method allows you to use pretty arbitrary message bodies — so it is whatever format the server wants.
The situation:
I have 2 webpages with 2 domains (backoffice.myurl.com & www.myurl.com).
The backoffice is written in classic asp, the frontend in asp.net 3.5 (vb.net)
When I hit a button in the backoffice, I want to set a cookie on the frontend.
I do this by calling a page on the frontend via Microsoft.XMLHTTP
Dim GetConnection
Set GetConnection = CreateObject("Microsoft.XMLHTTP")
GetConnection.Open "POST", webserviceLocation, False
GetConnection.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
GetConnection.Send("data=" &value)
In the aspx code I read the posted value and put it in a cookie:
If Not Request.Cookies("mytest3") Is Nothing Then
Response.Cookies("mytest3").Expires = Now.AddYears(-23)
End If
Response.Cookies.Set(New HttpCookie("mytest3", Request.Form.Item("data")))
Response.Cookies("mytest3").Expires = DateTime.Now.AddYears(30)
On another page on the frontend I want to read that cookie:
Request.Cookies("mytest3").Value
but the Request.Cookies("mytest3") is 'nothing' there.
Apparently the cookie is not set. What am I doing wrong or how can I solve this?
The pages are called (my debugger hits the breakpoints)
Is this even possible at all?
When creating the cookie you need to explicitly set the domain:
' I do not remember if the value should be set to myurl.com or .myurl.com
' Please test
Response.Cookies("mytest3").Domain = "myurl.com"
This way the browser will send the cookie along each request to *.myurl.com
Darin has answered your question but you have another problem with this line:-
Response.Cookies("mytest3").Expires = Now.AddYears(-23)
The response Cookie collection is a differentc collection to that of the Request collection. The response cookies is always empty until code specifically adds a cookie to it. Hence the above line will fail.
In my previous question, I was accidentally sending token/value pairs with an text/xml Content-Type which resulted in nothing being sent. Tim C's insight into that problem was extremely helpful. Thanks again, Tim!
Looking back at the original sending code, I now realize that the setting of the ServerXMLHTTP's Content-Type to text/xml was a recent and erroneous addition. The sending code I posted in my question looked like this:
url = "www.receivingwebsite.com\asp\receivingwebpage.asp"
information = "UserName=Colt&PassWord=Taylor&Data=100"
Set xmlhttp = server.Createobject("MSXML2.ServerXMLHTTP")
xmlhttp.Open "POST", url, false
xmlhttp.setRequestHeader "Content-Type", "text/xml"
xmlhttp.send information
The actual sending code is really:
url = "www.receivingwebsite.com\asp\receivingwebpage.asp"
information = "UserName=Colt&PassWord=Taylor&Data=100"
Set xmlhttp = server.Createobject("MSXML2.ServerXMLHTTP")
xmlhttp.Open "POST", url, false
xmlhttp.send information
...with no attempt to set the Content-Type before sending.
Unfortunately, the problem that originally lead me to ask for help still exists. My receiving classic asp page cannot see the information which is being posted by the ServerXMLHTTP object. The information is not in the request object's querystring or the form array. No matter what I do, I can't find the information but I know that it is being sent because when I change the content-type to application/x-www-form-urlencoded, I can see it in request.form array.
So what is the default content-type of the MSXML2.ServerXMLHTTP class?
And where is my information when the sending class is using that default content-type?
ASP will only fill the form array if the content type of the POST is "application/x-www-form-urlencoded". Generally ServerXMLHTTP will not set the content type header so if you don't do it manually no content type header is sent.
An exception to this is where you pass an XML Document as the parameter to send, in that case ServerXMLHTTP will set content type to "text/xml; charset=UTF-8".